Mr. Gustavel reported that IIB’s net income for the third quarter of 2018 was $2.2 million, or $0.29 per diluted share, an increase of 57.1% when compared to the $1.4 million, or $0.18 per diluted share, earned in the same period a year ago. “Profitability improved largely due to better interest rate margins, solid asset and deposit growth, and a lower corporate income tax rate,” CEO Gustavel stated. Net income for the nine months ended September 30, 2018, was $5.6 million, or $0.71 per diluted share, compared to $3.4 million, or $0.43 per diluted share, for the first nine months of 2017.

At September 30, 2018, the Bank's total assets were $742.2 million, an increase of $55.9 million, or 8.1%, when compared to September 30, 2017. Total loans, including loans held-for-sale, remained steady at $367.2 million; while total deposits and repurchase agreements increased $50.5 million, or 8.4%, to $651.6 million over the same timeframe. As of September 30, 2018, the allowance for loan and lease losses was $6.3 million, or 1.7% of total loans, excluding loans held-for-sale, and nonperforming assets continued to be less than 0.3% of total assets. As of quarter end, the Bank’s stockholders' equity to average total assets was 10.0%, and IIB’s capital ratios exceeded the regulatory thresholds required to be considered “Well-Capitalized.”

On October 11, 2018, IIB announced it has entered into a definitive agreement to merge with and into First Interstate BancSystem, Inc. ("First Interstate"). Subject to the merger agreement, IIB stockholders will receive 0.5 shares of First Interstate Class A common shares in exchange for each IIB share, or approximately 3.9 million First Interstate shares in aggregate. Using a price per share of First Interstate Class A common stock of $45.45 per share of October 5, 2018, the transaction results in an implied purchase price of $22.73 per share, which equates to an aggregate value of $181.3 million, including $5.4 million in cash consideration for option holders. Closing of the transaction is expected to occur in the first quarter of 2019. The transaction is subject to customary regulatory and shareholder approvals.More information can be found regarding IIB’s pending merger with First Interstate at or .

IIB will file its Consolidated Report of Condition and Income for the quarter ended September 30, 2018, ("Call Report") with the Federal Deposit Insurance Corporation by October 30, 2018, and will be available on the Federal Financial Institutions Examinations Council website at .

IIB was established in 1993 as an Idaho state-chartered, commercial bank that currently operates branches in Boise (3), Caldwell, Coeur d’Alene, Hayden, Meridian, Mountain Home, Nampa, Star, and Sun Valley/Ketchum, Idaho. IIB was named in a 2018 survey conducted by Populus as one of the Top Ten Best Places to Work in Idaho, is one of the 2018 Top Ranked Community Banks in the Idaho Business Review Reader Rankings, and was named among the top 1% most extraordinary banks in the U.S. by The Institute for Extraordinary Banking in 2016. The Bank has approximately 200 employees throughout the State of Idaho. To learn more about IIB, visit us online at .

First Interstate BancSystem, Inc. is a financial services holding company, headquartered in Billings, Montana, with $12.2 billion in assets as of June 30, 2018. It is the parent company of First Interstate Bank, a community bank operating over 120 banking offices, including online and mobile banking services, throughout Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. It is also the parent company of Inland Northwest Bank (“INB”), which was acquired by First Interstate in August 2018. The data processing conversion and merger of INB with and into First Interstate Bank will take place in November 2018; INB’s 20 locations in Idaho, Oregon, and Washington will officially open their doors as First Interstate Bank on Tuesday, November 13, 2018.

As a recognized leader in community banking services, First Interstate is driven by strong values, as well as a commitment to delivering a rewarding experience to its employees, strong returns to shareholders, exceptional products and services to its clients, and resources to the communities it serves.